<exception type="404" style="min-height: 500px; height: 80%;">
  你可以 &nbsp; <button nz-button nzType="primary" nzGhost (click)="history()">回到上一页</button> 或
  <button nz-button nzType="primary" nzGhost (click)="login()">重新登录</button>
</exception>